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Electronic apparatus and equipment
Communication power supply
DC power supply
Telecommunication system
Alarm and security system
Backup power for testing and
measuring instruments
UPS
Emergency lighting
Fire alarm and security systems
Auto control system
Maintenance-free operation Stable quality and high reliability
Compact design 10 years design time (at 25℃)
Features
Application
Specications
www.sunstonepower.comSunstone Power Industry Co.,ltd
Dimensions unitimm[inches]
ML12-50(12V50AH)
Discharge: -15 -50℃ (5-122℉)
13.5~13.8V (25℃/77℉) Temp.Coefficient -20mV/℃
Initial Charging Current Less than 16.5A
14.2~14.4V (25℃/77℉) Temp.Coefficient -30mV/℃
25 3± ℃ ( 77± 5℉ )
Storage : -15 -40℃ (5-104℉)
Charge : 0 -40℃ (32-104℉)
Approx Weight
For higher temperatures the time interval will be shorter.
at 25℃ (77℉) and then a freshening charge is required.
SunstoneML series batteries may be stored for up to 6 months
0℃ (32℉) 86%
25℃ (77℉) 100%
Terminal
Container Material
Self Discharge
Nominal Capacity
53.2AH (20hr, 1.80V/cell, 25 ℃/76℉) Operating Temp.Range
Nominal Operating Temp.Range
Cycle Use
Approx 16.2Kg
T3 or F5
Container Height 210 2mm±
Total Height(with Terminal) 216 2mm±
ABS
Capacity affected by
Temperature
40℃ (104℉) 103%
No limit on Initial Charging Current
Nominal Voltage
Length 228 2mm±
Width 137 2mm±
12V (6 cells)
50AH (10hr, 1.80V/cell, 25 ℃/77℉)
42.5AH (5hr, 1.75V/cell, 25℃/77℉)
30AH (1hr, 1.60V/cell, 25 ℃/77℉)
Dimension
550A (5S)Max. Discharge Current
Internal Resistance Approx 8.0mΩ
Standby Use
Constant Current Discharge (Amperes at 25℃/77℉)
10h 20h30min 45min 1h 2h
1.80V/cell 123.7 89.1 72.6
3h 5hF.V/Time 5min 10min 15min
12.44 8.56 5.02 2.6445.3 34.8 28.36 16.57
5.12 2.6847.2 36.1 29.25 17.04
1.70V/cell 146.1 104.5 85.1
12.75 8.761.75V/cell 135.1 97.8 78.8
13.03 8.91 5.18 2.7148.8 37.3 30.10 17.51
5.23 2.7551.4 38.9 31.29 18.01
1.60V/cell 168.4 1119.1 94.0
13.41 9.091.65V/cell 157.5 111.4 89.9
13.63 9.26 5.29 2.7753.7 40.3 32.34 18.51
Constant Power Discharge (Watts per cell at 25℃/77℉)
Note: The above characteristics data are average values obtained within three charge/discharge cycles, not the minimum values.
10h 20h30min 45min 1h 2h
1.80V/cell 231.4 163.2 137.8
3h 5hF.V/Time 5min 10min 15min
24.13 16.91 9.98 5.2185.1 66.2 55.22 31.89
10.11 5.2988.5 68.9 56.47 32.75
1.70V/cell 260.1 184.1 152.2
24.64 17.171.75V/cell 245.9 174.9 144.7
25.12 17.36 10.18 5.3491.5 71.1 57.26 33.53
5.3996.5 73.2 59.14 34.241.65V/cell 280.4 192.6 157.9
296.4 200.5 164.7
25.59 17.73 10.25
26.07 17.98 10.33 5.4499.5 75.1 60.99 34.921.60V/cell
ML12-50(12V50AH)
www.sunstonepower.comSunstone Power Industry Co.,ltd
Discharge100%(0.05CAx 20h)50%(0.05CAx 10h)
ChargeCharge Voltage 2.275V/CCharge Current0.1CA
Temperature 25 CO
2
3
1
Charge Volume
Charge Voltage
Charge Current
ChargeTime(h)
Ch
arg
e V
olt
ag
e( V
)
9
10
11
12
13
14
15 7.5
7.0
6.5
6.0
5.5
5.0
4.5
5.0
4.7
4.3
4.0
3.7
3.3
3.0
120
100
80
60
40
20
0
0.24
0.20
0.16
0.12
0.08
0.04
0
Ch
arg
e V
olta
ge(%
)
Cha
r ge V
olta
ge
( CA
)
0 2 4 6 8 10 12 14 16 18 20 24 28
100%
DOD
50%
DOD
30%
DOD
AmbientTemperature:25 C(77 F)O O
200 400 600 800 1000 12000
120
100
80
60
40
20
0
Testing conditionDischarging: current 0.17C(FV 1.7V/cell);Charging: current 0.25C max, voltage 2.45V/cell;Charging volume:125% of discharged capacity.
Number of Cycles
-20 -10 0 10 20 30 40 50 60
Ca
pa
city
(%
)
120
100
80
60
40
20
Temperature( C)O
0.1CA
0.17CA
0.25CA
Te
rmi n
al V
olt
ag
e(V
)
8.0
9.0
10.0
11.0
12.0
13.0
1 2 4 6 8 10 20 40 60 2 3 5 8 10 20
Min HDischargeTime
12VBattery(V) Temperature:25 C(77 F)
O O
100A
50A 30A
20A12.5A
8.5A 5.0A 2.5A
Cap
ac
i ty
(%)
100
80
60
40
20
0
2 4 6 8 10 12 14 16 18 20 22 24
30 CO
40 CO
20 CO
10 CO
0 CO
Supplementary charge required(Carry out supplementary chargebefore use if 100% capacity isrequires).
Supplementary charge requiredbefore use.This supplementary charge will helpto recover the capacity and shouldbe made as early as possible.
Supplementary charge may oftenfail to recover the capacity.The battery should never be leftstanding till this state is reached.
Supplementary charge and storageguidelines
StorageTime(months)
15
12
9
6
3
010 20 30 40 50
BatteryTemperature( C)O
Storage characteristics Effect of temperature on long term oat life
Charge characteristics Curve for standby use Cycle Life in Relation to Depth of Discharge
Temperature Effects in Relation to Battery CapacityDischarge characteristics Curve
Lif
e E
xp
ec
tan
cy
(ye
ars
)